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Finding the Fourth Proportional to 282,842.10, 390,210.75 and 161,918.19

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Solution

The fourth proportional to 282,842.10, 390,210.75 and 161,918.19 is: 223,383.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,842.10 : 390,210.75 = 161,918.19 : x
  2. Step 2: Convert to fraction form
    282,842.10/390,210.75 = 161,918.19/x
  3. Step 3: Cross multiply
    282,842.10x = 390,210.75 × 161,918.19
  4. Step 4: Simplify right side
    282,842.10x = 63,182,218,358.54
  5. Step 5: Solve for x
    x = 63,182,218,358.54/282,842.10
  6. Step 6: Final answer
    x = 223,383.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.